M. John-Patrick O’Connor proposes that — in contrast to recent contemporary scholarship that rarely focuses on the ethical implications of discipleship and Christology — Mark’s Gospel, as our earliest life of Jesus, presents a theological description of the moral life. Arguing for Mark’s ethical validity in comparison to Matthew and Luke, O’Connor begins with an analysis of the moral environment of ancient biographies, exploring what types of Jewish and Greco-Romanic conceptions of morality found their way into Hellenistic biographies. Turning to the Gospel’s own examples of...